Samsung is expected to unveil these new screens at the Consumer Electronics Show set to take place in the beginning of next year.

The company has already begun producing these new displays that have a resolution of 1920 x 1080 with a pixel density of more than 441ppi. This is twice as many pixels as Apple's Retina display found on the iPhone.

Another Samsung Galaxy S4 specs leak revealed that the new device will feature a 13-megapixel camera.

This information derived from a document that surfaced on the internet this week.

A higher amount of megapixels will make it more challenging for Samsung to have the handset perform well in low light conditions, since pixels get smaller and noise gets in easier in those conditions.

This 13-megapixel sensor was originally planned for the Galaxy S3 and second-generation Galaxy Note, but when the time came to release the two devices, Samsung chose to stick with an 8-megapixel sensor for efficiency .

A 13-megapixel shooter would be capable of capturing images with 4208 x 3120 resolution. This camera would require more processing power and extra RAM if Samsung were to include it on the fourth-generation Galaxy S.

The Galaxy S4 is also rumored to feature a quad-core Exynos 5450 chipset that clocks in at 2.0GHz, according to older reports.

This chip is said to be made on a 28nm process and its CPU might be downclocked to at least 1.7GHz, according to YouMobile.org.

A similar chipset is found in Samsung's next Nexus 10 tablet, which is powered by the Exynos 5250 that features two Cortex-A15 cores at 1.7GHz and Mali-604GPU.

No other information on the Galaxy S4 is available at this time. However, the smartphone should be released sometime during 2013.